Inside the Temple of Manna.

Li Er looked at his two sons, his eyes flashed, and after a moment of silence, he said: "The demand for this thing is too great, you two will each receive 100,000 yuan, and the Ministry of Industry will receive 300,000 yuan, and it will be done within ten days, can you have any objections?" ”

The King of Wei and the crown prince each received 100,000, everyone was the same, there was no partiality, and the ministers couldn't see Li Er's true thoughts, and then let the Ministry of Industry do 300,000, far more than the total of hundreds of thousands of the two, and the prince and the King of Wei were pressed down, and the Ministry of Industry represented the imperial court, and the people would only think of the good of the court in the future, and the people's hearts would still be in the hands of the saints.

High, really high!

Qin Huaidao couldn't help but praise in his heart, and immediately mourned for the prince and King Wei, really thought that this simple stove was easy to make? Without coke, the temperature cannot be reached, and without lime, the clay will scatter in the future.

The temperature can barely be reached by charcoal, but the court has to be hollowed out, and the king and the crown prince of Wei have to cry to death!

No, I have to improve the process when I go back, simplify it as much as possible, increase the production speed, and increase the output, and this furnace will have to be made by myself in the end.

However, Qin Huaidao was happy to see the King of Wei and the crown prince crying to death in the future, and he did not break it.

After the matter was settled, the ministers retired, Qin Huaidao followed out of the Ganlu Palace, walked forward for a distance, was pulled by Fang Xuanling, signaled to slow down, and fell behind everyone, Fang Xuanling said in a low voice: "Virtuous nephew, I saw you look abnormal just now, this stove is very difficult to do?" ”

Qin Huaidao was stunned, his expression management has always been in place, this Fang Xuanling is afraid that it is a set of news, right? Quietly asked: "The furnace is a little technically difficult, but it is not difficult to do, what does Master Fang mean?" ”

"It's good if it can be done, the old man is worried that the construction period will be delayed, and it will be the people who will suffer in the end." Fang Xuanling said in a low voice, his eyes were deep, revealing a little worry.

Qin Huaidao was worried about this when he heard this, and his respect came spontaneously, but he couldn't participate in the battle of the country's capital, not a word, thinking that he had to go back to improve his tools and improve productivity, so he said: "Shibo, the younger generation will have to be busy for a period of time in the future, I am afraid that I will not be able to go to court, please bear more." ”

"It's okay, make more honeycomb coal, the people are suffering, they are in urgent need of heating, your output is a little low, don't worry, the old man will help you carry it." Fang Xuanling agreed.

Walking out of the imperial city, Qin Huaidao said goodbye to Fang Xuanling and drove the carriage back to the Supervision Mansion, let people disperse, and bought all the gypsum from the major pharmacies in Chang'an City, which was a big car, and asked everyone to disperse to the counties the next day to help buy.

An hour later, Qin Huaidao returned to Qinjiazhuang with a gypsum, and sat down by the bonfire in the ancestral hall to think, it doesn't hurt that the appearance of the stove is ugly, free things, the common people don't pay attention to them, the key output is low, and the production of tiles is also slow, taking up a lot of manpower, some are not advisable.

We have to find a way to free up manpower and increase productivity.

Qin Huaidao picked up a piece of charcoal and drew it on the paper, while thinking, he suddenly had an idea, and thought of the future generations to make ceramic blanks, blank drawing is a technical job, no one can, he can't, it takes too much time to learn again, but the turntable of the blank is a good thing.

The next moment, Qin Huaidao threw the paper into the bonfire and burned it, hurriedly came to the iron shop in Zhuangshang, saw that some people were busy with something, and stepped forward and said: "It's all here, just right, come and help me make something." ”

Everyone gathered around curiously, and someone asked, "Young master, what are you doing?" ”

"Look at the dots, I'll only do it once." Qin Huaidao didn't explain much.

Next, Qin Huaidao found a big tree stump for people to sawn into two wooden piers, each of which was one foot thick, like a chopping meat cutting board, hollowed out the center of the wooden pier below, and let people beat out a cylinder with an iron sheet to smash it in, and the upper wooden pier also had a square hole in the center, which was not completely opened, and selected a one-meter-long hardwood to make it cylindrical, and one end was made into a square, which happened to be stuck into the square hole of the wooden pier above.

It is not easy to loosen after the square is stuck, and then the hardwood passes through the iron ring round hole of the wooden pier below, and the upper and lower wooden piers are connected together, the diameter of the hardwood is slightly smaller, and it will not shake when it enters, and the friction between the iron ring and the hardwood is small, and the wooden pier above is moved by a gentle turn, like a stone mill.

Qin Huaidao tried, but the resistance was still a little imperfect.

After thinking about it, Qin Huaidao found a small round hole in the middle of a stone slab, and put it under the hardwood that penetrated the wooden pier below, and raised the wooden pier on the top slightly so that the weight would not be pressed underneath.

In this way, the upper wooden pier is connected to a hardwood, and the hardwood penetrates the iron ring in the middle of the wooden pier below, and combines with the round hole of the lower slate, the iron ring plays a directional role, and the round hole of the stone slab plays a supporting role, and the rotation of the upper wooden pier is much more flexible and convenient, and the resistance is much smaller.

Next, Qin Huaidao found some wooden planks to make a square with a length and width of one meter, nailed to the surface of the wooden pier above, forming a large working platform, the platform gently pushed hard, and quickly rotated, everyone who watched was stunned, and they all gathered around to try, admiring, obviously very simple, but so magical.

Qin Huaidao did not explain the principle, and continued to let people help make arc-shaped wooden boards, a total of four, three joints are connected together, the other joint is just stuck, and it can be opened with a break, the diameter of the upper end is just larger than that of honeycomb coal, which is convenient for putting honeycomb coal in the future, and the bottom end is slightly smaller, forming a small platform for iron bars to be overhead in the future, for air to enter, and a furnace internal mold drum is done.

After that, Qin Huaidao asked people to bring a large piece of clay, make the clay into a cross shape, smooth it, adjust the thick end with a bow rope, cut through the clay, and then uncover it with his hand, a large piece of cross-shaped mud was removed, put it in the center of the workbench, sprinkle some water, and then use a burlap cloth to dip it in water, put the just made drum in the middle of the cross-shaped mud piece, lift up the four pieces of mud, stick it on the wheel, sprinkle water to make the clay softer, shape it by hand to form a whole, and then fix a position with a wooden strip and rotate the cylinder.

After a few turns, the mud on the cylinder became a perfect shape, the same size as the stove, fixed with a wooden knife, and then turned, the irregular places were cut off, and the height was the same as that of the stove, and it was smooth and flat, and the outer light looked much better.

After that, Qin Huaidao found a bamboo pipe of the right size, took a small section, made a concave arc at one end, thinned as a knife, inserted it into the lower end of the barrel, took down a large piece of mud, formed a vent, and then flattened it with a bamboo branch, and pierced it next to it to form a small hole.

The shape of a furnace is done, the shape is not only beautiful, but more importantly, smooth, round, and integrated, and there is no need to make two mud cylinders, and it is so troublesome to fill the clay in the middle.

Scrape the bottom along the platform with iron wire to avoid sticking, and then pick up the drum as a whole from the workbench, find a clean place to put it down, break the wooden board, the drum is loose, shrink, and easily taken out of the clay, everyone is dumbfounded, the stove can still do this?

If you hadn't witnessed the whole process, you wouldn't have believed it.

Qin Huaidao didn't explain too much, if he didn't know how to draw the blank, it would be faster to directly use mud to draw and form, and he didn't need to do a drum mold at all, and asked, "Have you learned it?" ”

Everyone lowered their heads in embarrassment, not daring to speak.

I haven't done it, and I don't know the bottom of my heart.